<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // 模拟获取 用户数据 订单数据 商品数据
        function getUsers(){
            setTimeout(()=>{
                let data ='用户数据';
                iterator.next(data);
            },1000)
        }
        function getOrders(){
            setTimeout(()=>{
                let data ='订单数据';
                iterator.next(data);
            },1000)
        }
        function getGoods(){
            setTimeout(()=>{
                let data ='商品数据';
                iterator.next(data);
            },1000)
        }

        function *gen(){
            let uses = yield getUsers();
            console.log(uses);
             let orders = yield getOrders();
             console.log(orders);
            let goods=yield getGoods();
            console.log(goods);
        }

        let iterator = gen();
        iterator.next();
    </script>
</body>
</html>